Gun sight



OR 2!23495l8 March 11, 1941. M. J. CUZDEY GUN SIGHT Filed April 17, 1940 .ZJI. JCIZZZQ Q I N VEN TOR.

ATTORNEYS.

Patented Mar. 11, 1941 UNITED STATES SEARQH PATENT OFFICE 4 Claims.

This invention relates to a gun-sight or gunscope and while it is designed primarily for use in connection with shotguns, it is to be understood that the improvements may be applied with equal success to other types of guns both large and small.

When firing at moving objects, such as ducks, etc., it has been necessary for the marksman to guess the angle at which the barrel must be held in order to compensate for the speed, distance, and direction of movement of the object constituting the target. Consequently success has been dependent largely upon a high degree of skill.

An object of the present invention is to provide a gun-sight or gun-scope so mounted and constructed that after it has been quickly adjusted to a predetermined distance, the user, by sighting through one of a pair of simultaneously adjustable tubes, will become much more efiicient in his effort to hit the moving target than would otherwise be possible under ordinary shooting conditions.

A further object is to provide a device of this character which is inexpensive, can be applied readily to a gun, and, after being placed in position, can be quickly adjusted to the estimated distance at which the target is located so that when the target is moving in one direction, it may be sighted through one of the tubes and, if moving in the opposite direction can be sighted through the other tube, the results in either case being equally effective.

With the foregoing and other objects in view which will appear as the description proceeds, the invention consists of certain novel details of construction and combinations of parts hereinafter more fully described and pointed out in the claims, it being understood that changes may be made in the construction and arrangement of parts without departing from the spirit of the invention as claimed.

In the accompanying drawing the preferred form of the invention has been shown.

In said drawing Figure 1 is a top plan view of a portion of a shotgun equipped with the present improvements.

Figure 2 is a section on line 2-2, Figure 1.

Figure 3 is a section on line 33, Figure 1.

Figure 4 is a section on line 4-4, Figure 3.

Figure 5 is a side elevation of the supporting bracket for the adjusting screw.

Figure 6 is an enlarged section through a portion of the adjusting mechanism.

While the present improvements have been shown as applied to a double-barreled shotgun, it is to be understood that with slight modifications it can also be applied to a gun having but a single barrel. In either case a rib is extended longitudinally of the gun. For example and as shown in the drawing, this rib A is positioned between the barrels B and is parallel therewith.

The structure constituting the present invention includes a rear mount I and a front mount 2, these mounts being extended across the rib A and being attached thereto by screws 2 or other suitable fastening means. The central portion of each mount straddles the rib A, there being depending flanges 3 and 4 respectively on the two mounts positioned to receive the rib between them. The outer sides of the mounts can also be formed with flanges 5 and 6 respectively for bearing down on the barrels so that when the mounts are in position they are thus held fixedly relative to the barrels.

Located on the mount I directly over each barrel B is a yoke 6 connected to the mount by a pivot stud I and seated within each yoke and fastened thereto by screws 8 or the like, is a split ring 9 forming a clamp the laterally projected ends I of which are adapted to be drawn together and held by a screw II. The clamp is fitted about and tightly engages one end portion of a tube used for sighting purposes. One of these tubes is provided for each clamp and the tubes have been indicated at I2 and I3 respectively. Thus each tube is mounted to swing laterally about an axis extending diametrically through the barrel thereunder, the two axes being parallel.

A groove I4 is formed in the bottom of one of the yokes 6 and fitted snugly therein is a tongue I preferably in engagement with stud I so that this tongue will swing with its yoke 6 about pivot stud I. The free end of the tongue I5 forms an index or pointer I6 which bears on that portion of the mount I above the rib A and cooperates with an arcuate series of graduations I6 concentric with the axis of rotation of the index I6. These graduations can be calibrated for distance.

Mount 2 is located astride the rib A and on the barrels B at a point in advance of the mount I and is similar in construction to the mount I with the exception that those portions of the mount over the centers of the barrels are provided with transverse slots I'I. Yokes I8 are slidably mounted on the mount 2 above the slots and are provided with depending studs I9 which are mounted in the slots for sliding movement, the lower ends of these studs being formed with heads or enlargements 20 which cooperate with the walls of the slots to prevent the studs from pulling upwardly therefrom.

Seated within and secured to the yokes l8 are split rings or clamps 2| and 22 respectively which extend around and are fitted tightly upon the respective tubes I2 and I3. The ends of the clamps are joined by tightening bolts 23 and to one end of each clamp 2| and 22 is pivctally attached a forked block 24. As shown particularly in Figure 6, the two forked blocks are provided with screw-threaded bores 21 in which are seated the end portions of an adjusting screw 28. One end portion of the screw has a righthand thread and the other end portion has a left-hand thread and by means of a nut 29 carried by the screw, said screw can be turned in either direction with the result that the yokes I8 thus can be caused to move toward or from each other about the studs 1 as axis.

For the purpose of holding the nut 29 properly centered and preventing the tubes from shifting too far in either direction, said nut is seated in the forked upper end 30 of a bracket 3| which is fastened at its lower end to the mount 2 as indicated at 32. To facilitate assembly of the bracket with the screw, the forked upper end 30 of the bracket is preferably slotted, as shown at 33 to receive the screw.

When the nut 29 is rotated in one direction so as to draw the blocks 24 toward each other to one limit of their movement, the barrels B are brought into parallel relation and the index or pointer I6 is positioned at one end of the series of graduations l6. When it is desired to fire at a moving target, the distance is quickly estimated and the nut 29 turned until the index is brought to a graduation designating the assumed distance. If the target is moving toward the left, the marksman sights it through the right-hand tube [3 so that the barrel or barrels will thus be pointed ahead of the target. If the target is moving toward the right, the marksman sights it through the left-hand tube I2 so that the barrel or barrels thus are pointed to the right of the moving target. Thus while the marksman is concentrating on sighting the target through the proper tube, the gun can be fired and the delivered charge should strike the target as it moves into the range of fire.

What is claimed is:

1. A gun-sight including mounts for attachment in horizontally spaced position on a barrel, spaced tubes pivotally supported on one of the mountss'paced laterally of the barrel, a slidable connection between the tubes and the other mount, a thumb piece interposed between the tubes and means operated by the thumb piece and carried by one of the mounts for simultaneouslysshifting bothntubes angularly toward or from each other as the thumb piece is actuated.

2. A gun-sight including mounts for attachment in horizontally spaced.- position on a barrel, spaced tubes pivotally supported on one of the mounts spaced laterally of the barrel, a slidable connection between each tube and the other mount, means interposed between the tubes and carried by one of the mounts for simultaneously adjusting the tubes angularly toward or from each other, said means including opposed blocks, a pivotal connection between each block and the respective tube, a thumb piece interposed between the blocks, and threaded means connecting the thumb piece to the respective blocks, the threads on said means being pitched to simultaneously move the tubes angularly toward or from each other.

3. A gun-sight including mounts for attachment in horizontally spaced position on a barrel, spaced tubes pivotally supported on one of the mounts spaced laterally on the barrel, a slidable connection between each tube and the other mount, means interposed between the tubes and carried by one of the mounts for simultaneously adjusting the tubes angularly toward or from each other, said means including a fixed bracket on the mount, an adjusting thumb piece carried thereby, oppositely pitched threaded means positioned for actuation by the thumb piece, and separate connections between said means and the respective tubes for shifting the tubes angularly and simultaneously toward or from each other when the thumb piece is rotated.

4. A gun-sight including mounts for attachment in horizontally spacedposition on a barrel, spaced tubes pivotally supported on one of the mounts spaced laterally of the barrels, a slidable connection between each tube and the other mount, means interposed between the tubes and carried by one of the mounts for simultaneously adjusting the tubes angularly toward or from each other, and cooperating means on one of the mounts and one of the barrels for indicating the amount of lead from the target to the line of discharge.

MICHAEL J. CUZDEY. 

